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package com.sun.jersey.spi;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
import java.util.List;
import java.util.Map;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.ext.MessageBodyReader;
import javax.ws.rs.ext.MessageBodyWriter;
/**
* An injectable interface providing lookup of {@link MessageBodyReader} and
* {@link MessageBodyWriter} instances.
*
* @see javax.ws.rs.core.Context
* @see MessageBodyReader
* @see MessageBodyWriter
* @author [email protected]
*/
public interface MessageBodyWorkers {
/**
* Get the map of media type to list of message body writers that are
* compatible with a media type.
*
* @param mediaType the compatible media type.
* @return the map of media type to list of message body writers.
*/
public Map> getReaders(MediaType mediaType);
/**
* Get the map of media type to list of message body writers that are
* compatible with a media type.
*
* @param mediaType the compatible media type.
* @return the map of media type to list of message body writers.
*/
public Map> getWriters(MediaType mediaType);
/**
* Convert a map media type to list of message body readers to a string.
*
* @param readers the map media type to list of message body readers
* @return the string representation.
*/
public String readersToString(Map> readers);
/**
* Convert a map media type to list of message body writers to a string.
*
* @param writers the map media type to list of message body readers
* @return the string representation.
*/
public String writersToString(Map> writers);
/**
* Get a message body reader that matches a set of criteria.
*
* @param the type of object to be read.
*
* @param mediaType the media type of the data that will be read, this will
* be compared to the values of {@link javax.ws.rs.Consumes} for
* each candidate reader and only matching readers will be queried.
*
* @param type the class of object to be read.
*
* @param genericType the type of object to be produced. E.g. if the
* message body is to be converted into a method parameter, this will be
* the formal type of the method parameter as returned by
* Class.getGenericParameterTypes.
*
* @param annotations an array of the annotations on the declaration of the
* artifact that will be initialized with the produced instance. E.g. if the
* message body is to be converted into a method parameter, this will be
* the annotations on that parameter returned by
* Class.getParameterAnnotations.
*
* @return a MessageBodyReader that matches the supplied criteria or null
* if none is found.
*/
MessageBodyReader getMessageBodyReader(Class type, Type genericType,
Annotation annotations[], MediaType mediaType);
/**
* Get a message body writer that matches a set of criteria.
*
* @param the type of the object that is to be written.
*
* @param mediaType the media type of the data that will be written, this will
* be compared to the values of {@link javax.ws.rs.Produces} for
* each candidate writer and only matching writers will be queried.
*
* @param type the class of object that is to be written.
*
* @param genericType the type of object to be written. E.g. if the
* message body is to be produced from a field, this will be
* the declared type of the field as returned by
* Field.getGenericType.
*
* @param annotations an array of the annotations on the declaration of the
* artifact that will be written. E.g. if the
* message body is to be produced from a field, this will be
* the annotations on that field returned by
* Field.getDeclaredAnnotations.
*
* @return a MessageBodyReader that matches the supplied criteria or null
* if none is found.
*/
MessageBodyWriter getMessageBodyWriter(Class type, Type genericType,
Annotation annotations[], MediaType mediaType);
/**
* Get the list of media types supported for a Java type.
*
* @param the type of object that is to be written.
*
* @param type the class of object that is to be written.
*
* @param genericType the type of object to be written. E.g. if the
* message body is to be produced from a field, this will be
* the declared type of the field as returned by
* Field.getGenericType.
*
* @param annotations an array of the annotations on the declaration of the
* artifact that will be written. E.g. if the
* message body is to be produced from a field, this will be
* the annotations on that field returned by
* Field.getDeclaredAnnotations.
*
* @return the list of supported media types, the list is ordered as
* follows: a/b < a/* < *\\/*
*/
List getMessageBodyWriterMediaTypes(
Class type,
Type genericType,
Annotation[] annotations);
/**
* Get the most acceptable media type supported for a Java type given a set
* of acceptable media types.
*
* @param the type of object that is to be written.
*
* @param type the class of object that is to be written.
*
* @param genericType the type of object to be written. E.g. if the
* message body is to be produced from a field, this will be
* the declared type of the field as returned by
* Field.getGenericType.
*
* @param annotations an array of the annotations on the declaration of the
* artifact that will be written. E.g. if the
* message body is to be produced from a field, this will be
* the annotations on that field returned by
* Field.getDeclaredAnnotations.
*
* @param acceptableMediaTypes the list of acceptable media types, sorted
* according to the quality with the media type of highest quality
* occurring first first.
* @return the best media types
*/
MediaType getMessageBodyWriterMediaType(
Class type,
Type genericType,
Annotation[] annotations,
List acceptableMediaTypes);
}
